Descriptive statistics worksheet with answers

Free printable Descriptive statistics worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
5101520253035

Find the mean x̄ of the data: 31, 24, 13, 37, 26, 5, 35.

n = 7
x̄ =
2.Easy
101520253035

Find the mean x̄ of the data: 37, 28, 39, 20, 24, 7, 22.

n = 7
x̄ =
3.Medium
25303540455055

Find the sample standard deviation s of the data: 46, 57, 48, 45, 42, 25.

n = 6
s =
4.Medium
2025303540

Find the sample standard deviation s of the data: 34, 20, 29, 38, 43.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 500 and standard deviation 40. What proportion P of values is above 560?

μ = 500σ = 40x = 560
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 100 and standard deviation 10. What proportion P of values is below 112.5?

μ = 100σ = 10x = 112.5
P =

Answer key

  1. 1. x̄ = 24.43
  2. 2. x̄ = 25.29
  3. 3. s = 10.53
  4. 4. s = 8.815
  5. 5. P = 0.06681
  6. 6. P = 0.8944

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